Write the equation of the axis of symmetry for the following. :) Last time promise. Thanks again?

Question

a. y=x^2 - 6x + 8
b. y= 3x^2 - 4x + 6
Thanks so much. i'm not good at this stuff.

Answer 1

Formula of axis of symmetry is -b/2a.

a. -(-6)/2*1
=6/2

x=3 (this is the equation)

b. -(-4)/2*3
=8/6

x=4/3 (this is the equation)

=)

Answer 2

Question a
y = (x² - 6x + 9) - 9 + 8
y = (x - 3)² - 1
Axis of symmetry is x = 3
Question b
y = 3.x² - 4.x + 6
Y = 3(x² - (4/3).x + 2)
y = 3. [(x² - (4/3).x + 4/9) - 4/9 + 2]
y = 3.[ (x - 2/3)² + 14/9 ]
Axis of symmetry is x = 2/3